Wheel.



1 PATENTBD JULY 25, 1905.

J. A. CASEY.

WHEEL.

APPLIOATION rmm APIB.12,1905.

70% J7. Caoy mlcmuummunmnm w Qmnc UNITED STATES PATENT OFFICE.

JOHN A. CASEY, OF JACKSONVILLE, FLORIDA, ASSIGNOR OF ONE-HALF TO EMIL H. DANIELS, OF JACKSONVILLE, FLORIDA.

WHEEL.

Specification of Letters Patent.

Patented July 25, 1905.

Application filed April 12, 1905. Serial No- 255,199-

To aZZ 1071/0112, it may concern.-

Be it known that I, JOHN A. CASEY, a citizen of the United States, residing at J acksonville, in the county of Duval and State of Florida, have invented new and useful 'Im provements in Wheels, of which the following is a specification.

' This invention relates to wheels designed especially for use upon railway-cars, and has for its object to produce a comparatively simple inexpensive device of this character in which the rim or tread of the wheel will frictionally engage the rails, thus to obviate slipping, one wherein the wheels will break and remove sleet or the like from the rails, and one in which the brakes will firmly engage the wheel -treads, thus to insure instantaneous stoppage of the cars.

With these and other obj ects, in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described. k; In the accompanying drawings, Figure 1 is a side elevation of a wheel embodying the invention. Fig. 2 is anenlarged detailview of a portion of the wheel-tread. Fig. 3 is an enlarged detail sectional elevation, the section being taken on the line 3 3 of Fig. 2.

Referring to the drawings, 1 designates a wheel composed of the usual or any appropriate material and comprising a web 2, a rim or tread 3, and a rail-engaging flange 4.

In accordance with the present invention the tread 3 has formed therein at equallyspaced intervals around the entire circumference of the wheel a series of intersecting grooves 5, extended in a diagonal direction transversely of the tread, thus to produce a central series of diamond-shaped frictional members or projections 6 and inner and outer marginal projections 7 of semidiamond shape.

I11 practice the frictional engaging members 6 and 7 present mar inal portions which bite into, and thus secure y engage, the tread of the rail, thereby wholly obviating slipping of the wheel upon the rails, with the consequent loss of power in driving the cars. It

is to be particularly observed in this connection that owing to the grooves 3 intersecting, and thus forming the frictional projections,

the latter will act to out and destroy sleet or ice upon the rails, thereby obviating the ne'- cessity for using sand or the like upon the rails and at the same time insuring a positive frictional engagement between the parts. It may be mentioned, further, that in the use of the wheel herein described the brakeshoes will firmly engage the wheel-tread,

thereby insuring instantaneous stopping of a the cars and at the same time lost motion between and' wearing of the shoes and wheeltread, as common in the use of wheels now commonly employed.

From the foregoing it is apparent that there is produced a simple inexpensive device admirably adapted for the attainment of the ends in view and one wherein an increased friction will be established between the wheel and rails and also between the wheel and brakeshoes, it being understood that in attaining these ends minor changes in the details of construction herein set forth may be resorted to without departing from the spirit of the invention.

Havin thus fully described the invention, what is c aimed as new is 1. A wheel having a tread provided With intersecting grooves producing projecting engaging ortions.

2. A w eel having a tread provided with diagonally-disposed lntersecting grooves producing. projecting frictional,engaging portions.

3. A wheel having a tread provided with diagonally-disposed intersecting grooves producing a series of centrally-arranged substantially diamond-shaped engaging portions, andinner and outer semidiamondshaped enga ing portions.

4. A whee having a tread provided with transversely-extending intersecting grooves producing projecting frictional engaging portions.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN A. CASEY.

Witnesses:

PALMER H. SMITH, SALLIE V. NEwsoN. 

